[Maarten88]

No, but Visual Studio 2015 came out July 20, only 7 weeks ago. I've been using it 3 weeks now. I find it difficult to judge a proposed feature when there was so little time to get used to the current situation. Maybe it's a great idea, I don't know. It looks like the next step beyond the Null-Conditional operator. I'll be migrating a lot of code to use that in the coming weeks. After that I'll have a much better idea how much I like this idea.

[ygra]

It's a proposal. It doesn't even have to be implemented in the language for the next version. The C# 6 proposals were done a long time ago as well, and some didn't make it into the language after all.

What would you have the language designers do? Wait two years before even thinking about what to work on next?

[Sanddancer]

It was released 7 weeks ago, but has been in preview for several months prior to that. This could be a result of looking at feedback for the preview, and deciding that this feature wasn't a good fit for 2015, but was something that should be discussed soon.